Custom Post Type Archives

Hello,

probably, I’m just missing something but I can’t make it work with custom post types archives.

For example https://my-site.com/videos/?json=1 returns blank page. ‘videos’ is rewrite slug and query_var for ‘video’ post type. And https://my-site.com/videos/ return correct page of ‘video’ post type archive.

Any suggestions?

Thank you.

https://www.ads-software.com/plugins/json-api/